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Lesson 1.3
Changing in Matter - What is a Physical Change     

Key Concepts
  • Changes in Matter
  • Physical Change
  • Change in State
  • Other Physical Changes
Chem. 1.3 Vocabulary
  • physical change
  • chemical change
  • law of conservation of mass
  • energy
  • temperature
  • thermal energy
  • endothermic change
  • exothermic change

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Changes in Matter
  • Chemistry is the study of changes in matter.
  • Matter can change in two ways.

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Physical Change
  • In a physical change, matter changes its appearance but does not change into a different substance.
  • A substance that undergoes a physical change is still the same substance after the change.

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        Other Physical Changes
  • Other kinds of physical changes are dissolving, bending, crushing, and filtering.


Lab 1.3 Change
Quiz 1.3
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